Daughter of Matilda and Erenfrid, Count Palatine of Lorraine; her brother was Archbishop Hermann II of Cologne, her sisters were Queen Richeza of Poland and Abbess Theofano in Essen. Nun. Abbess of Saint-Mary-in-Kapitol Abbey in Cologne, Germany.
- Book of Saints, by the Monks of Ramsgate
- Heiligen 3s
- Den katolske kirke
- Our Sunday Visitor’s Encyclopedia of Saints
- “Saint Ida of Cologne“. CatholicSaints.Info. 26 November 2012. Web. 6 February 2016. <>